ANTHONY NISTOR // TRAFFIC LIGHT SYSTEM

Signalized Traffic Light System

A tabletop town that coordinates a main road, two side streets, a pedestrian crossing, a servo barrier, and lamps that respond to the room.

PLAY PROJECT DEMO VIEW HARDWARE & VIDEO
// SYSTEM ARCHITECTURE

How the Intersection Operates

The model was drawn in CAD, simulated as a circuit, then printed and wired so the signals, the gate, and the lamps run together on one Arduino.

  • Multi-phase Signals Separate red, yellow, and green channels for the main street, two side streets, and a pedestrian crossing.
  • Barrier Control A servo raises and lowers yellow barrier arms across the lane in front of the parking court.
  • Sensors Change the Sequence A pedestrian button requests a crossing, an infrared sensor watches the gate, and a light sensor decides when the street lamps turn on.
INTERSECTION_LOG ACTIVE
1. INPUTS

Button, infrared detector, and light sensor

SENSE
↓ Requests and readings
2. ARDUINO UNO

Phase timing and output control

CONTROL
↓ Drive signals
3. MODEL OUTPUTS

Signal LEDs, barrier servo, and street lamps

ACTUATE
// PROJECT DEMO

Project Presentation

The finished intersection running: signals, the pedestrian crossing, the barrier, and the street lamps.

PROJECT_PRESENTATION.MP4 LIVE DEMO

The Built Intersection

This recording shows the completed model in operation, with the Arduino driving the signals, the crossing, the gate, and the lamps.

// HARDWARE & SOFTWARE

System Component Breakdown

01

Arduino Uno

The controller used in the TinkerCAD schematic and in the finished intersection.

02

Signal Heads

Printed housings with red, yellow, and green channels for vehicles and a separate pedestrian signal.

03

Barrier Servo

A hobby servo in each gate housing lifts and lowers the yellow arms across the road.

04

Sensors

Pedestrian button, infrared photo-diode near the gate, and a light sensor for the street lamps.

// PROJECT MEDIA

Video Demonstration & Photos

The printed town, the CAD assembly, and the circuit that drives it.

INTERSECTION_FLYOVER.MP4 MODEL PASS

Finished Intersection

A pass over the completed model: roads, crosswalk, signal poles, barrier, house, and street lamp, built from the CAD assembly and wired to run.

Finished Town
CLICK TO ENLARGE

Finished Town

Signals lit, barrier raised, house and palms in place on the printed base.

Layout from Above
CLICK TO ENLARGE

Layout from Above

Roads, crosswalk, parking court, and the barrier across the lane.

Signals and Gate
CLICK TO ENLARGE

Signals and Gate

Vehicle signal, pedestrian housing, call button, and the barrier lowered.

CAD Assembly
CLICK TO ENLARGE

CAD Assembly

The FreeCAD model of the intersection before it was printed.

Circuit Schematic
CLICK TO ENLARGE

Circuit Schematic

Arduino Uno, signal groups, gate servo, and the three sensors.

Bench Build
CLICK TO ENLARGE

Bench Build

Wiring the electronics beside the printer, supply, and oscilloscope.

// SLIDESHOW

All Project Pictures

71 photographs and drawings from this build.

20250605_193610.jpg 1 / 71
20250605_193610.jpg
// TECHNICAL SPECIFICATIONS

System Parameters & Metrics

PARAMETER SPECIFICATION / VALUE
Controller Arduino Uno
Vehicle Phases Main street and two side streets
Pedestrian Phase Dedicated signal and call button
Barrier Servo-driven arms across the lane
Infrared Sensor Object detection at the gate
Light Sensor Street-lamp control
Structure 3D-printed roads, signals, house, and base
Circuit Development TinkerCAD, Traffic Light System — Anthony